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<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <h1>hello</h1>
    <h2>hello</h2>
    <h3>hello<img src="./web.png" title="好图" width="100px" height="100px" 
border="5px"></h3>
    <h4>hello<img src="https://img0.baidu.com/it/u=2139732729,1381089638&fm=253&fmt=auto&app=138&f=JPEG?w=800&h=1428"></h4>
    <h5>hello</h5>
    <h6>hello</h6>
</body>
</html>